Global population genomic signature of Spodoptera frugiperda (fall armyworm) supports complex introduction events across the Old World

Abstract

This population genomics study identifies the complex multiple introduction history of Spodoptera frugiperda (fall armyworm) from the Americas, into Africa and Asia. This provides new insight into the ‘east-to-west’ directionality of gene flow, and suggests ample genomic exchange at the nuclear level.